Ah! 5.6 seems to be a "magic" aperature. I use this alot myself because experience has shown me it produces some of the best shots
The shutter speed... did you determine that or let the camera choose? I often use aperture priority mode and only use shutter mode for when I need fast action. (And light is ample.)I like to go by natural light too. Sometimes poor light is the most frustrating aspect of photography.
Thank you for the info!!